Needed for dev-libs/liborcus, which, in turn, is needed for new libreoffice
No objection, go for it ARM team. Built fine on my PandaBoard already.
+ 14 Jan 2013; Sergey Popov <pinkbyte@gentoo.org> libzip-0.10.1-r1.ebuild: + Keyword ~arm, wrt bug #451528